William eckstein



' (No Model.) Q

, W. EOKSTEIN.

-METALLIG LATHING.

Patented Feb. 6, 1894.

INVENTOH'" WITNESSES.

A TTOHNEYS UNITED STATES WILLIAM EOKS TEIN,' OF LONDON, ENGLAND.

METALLIC LATHING.

SPECIFICATION forming part of Letters Patent No. 514,313, 'dated February 6, 1894. Application filed October 3,1893. Serial No. 487,058. (No model.) Patented in England June 11, 1892, No. 11,036-

.lo all whom it may concern.- v

Be it known that I, WIILLIAM ECKSTEIN, of 187 Union Street, London, S. E., in the county of Surrey, England, have invented a new and useful Improvement in Metallic Lathing, (for which I have obtained Letters Patent in Great Britain, No. 11,036, dated June 11, 1892,) of which the following is a full, clear, and exact description.

The invention relates to metallic lathing having means such as keys, loops, or spurs,

for causing the plaster when applied thereto, to be interlocked with such lathing. Various forms of plaster-engaging devices have been provided, and the present invention has for its object to improve and make more efficient such plaster engaging devices, and at the same time greatly increase the rigidity of the plate.

The invention consists in the novel construction hereinafter particularly described and defined in the claim.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1, is a broken front view of a piece of my improved lathing. Fig. 2, is a plan or top edge view thereof, as indicated by the arrow in Fig. 1. Fig. 3, is a vertical section on line 33, Fig 1; and Fig. 4. is a perspective View of a piece of the lathing. It will be understood that both sides of the plate are similar and that the plate consequently may be secured with either face as the front, and the reference made hereinafter to the front and the inward and outward bulging of the loops, is arbitrary and in the interest of intelligent description.

In producing metallic lathing in accordance with my invention, a plate A, of thin sheet metal, is formed with broad or large corrugations a, a, a of, &c., thereby giving a regular undulating surface on both sides, and in the plate, in each corrugation, transverse slits are produced, and the metal between each pair of slits, is bulged to form loops B, B, which bulge the reverse of the curvature of the corrugation in which they are formed. Thus the loops B, B, of adja-' cent undulations are bulged in opposite di rections from the plane of the plate; that is, the undulation a, is outward and the loops B therein are bulged inward, as seen in front view, Fig. 1, and top edge or plan-view, Fig.

2, while the undulation a, which curves inlation join the plate in the next adjacent undulation, at points within the line of the loops of the said adjacent undulations, that is, the ends I), of one set of loops, are not in alignment longitudinally of the corrugation, with the ends of adjacent series of loops, but within the line of juncture of the latter, so that the loops break joint so to speak, and in-this way no continuous weak lines are present on which the plate might have a tendency to yield, such as the very numerous openings might otherwise produce. It will further be seen by reference to Figs. 2 and 3, that I bulge the loops of each undulatiou beyond the plane of proj cation of the next adjacent undulations,

thereby providing openings sufficiently large for the plaster to find its way in proper quantity to effect an increased interlocking engagement with the undulations and the loops.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- .Metallic lathing consisting of a corrugated plate, having plaster-engaging loops projecting from opposite sides and extending transversely across said corrugations, and bulging reversely to the latter, the ends of said loops or their points of attachment to the plate on one side of the same being located beyond the line of the ends of the adjacent loops on the opposite side of the plate, whereby the mean thickness of the plate is increased, as shown and described.

WILLIAM EGK STEIN.

Witnesses:

JOHN ALFRED WILLMORE, JOHN GEORGE WILLMORE. 

